CN116947306A - Tempering furnace and combustion control method - Google Patents
Tempering furnace and combustion control method Download PDFInfo
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- CN116947306A CN116947306A CN202310938590.1A CN202310938590A CN116947306A CN 116947306 A CN116947306 A CN 116947306A CN 202310938590 A CN202310938590 A CN 202310938590A CN 116947306 A CN116947306 A CN 116947306A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 110
- 238000005496 tempering Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims description 19
- 239000011521 glass Substances 0.000 claims description 49
- 238000002156 mixing Methods 0.000 claims description 24
- 238000007496 glass forming Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 59
- 239000002737 fuel gas Substances 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 238000007599 discharging Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000000191 radiation effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a tempering furnace, which comprises: a first furnace body; the first furnace body and the second furnace body form a combustion cavity together; the first porous medium burners are arranged in the combustion cavity at intervals along the length direction of the first furnace body and are connected with the first furnace body, and the first porous medium burners are used for burning gas; the second porous medium burners are arranged in the combustion cavity at intervals along the length direction of the second furnace body and are connected with the second furnace body, and the second porous medium burners are used for burning gas; the first convection fans are arranged between two adjacent first porous medium burners and can blow gas; the second convection fan is arranged between two adjacent second porous medium burners, the projection of the second convection fan is overlapped with the projection of the first convection fan along the height direction of the first furnace body, and the second convection fan can blow gas. The tempering furnace provided by the invention can be used for enabling the generated temperature to be uniform, so that the glass forming quality is better.
Description
Technical Field
The invention relates to the technical field of glass manufacturing and processing, in particular to a tempering furnace and a combustion control method.
Background
In the related art, a glass tempering furnace forms a compressive stress layer on the surface of glass and forms a tensile stress layer inside the glass by using a physical or chemical method; when the glass is acted by external force, the compressive stress layer can offset partial tensile stress, so that the glass is prevented from being broken, and the purpose of improving the strength of the glass is achieved. Wherein, when glass is tempered in a tempering furnace, stress spots can be generated. The stress unevenness is mainly caused by uneven stress, such as caused by temperature difference between the furnace edge and the middle part during heating. Specifically, when the tempering furnace heats glass by gas combustion, if the temperature is not uniform, the quality of glass molding is poor.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the tempering furnace which can lead the generated temperature to be uniform, thereby having better glass forming quality.
The invention also provides a combustion control method.
According to a first aspect of the present invention, a tempering furnace includes:
a first furnace body;
the first furnace body and the second furnace body form a combustion cavity together;
the first porous medium burners are arranged in the combustion cavity at intervals along the length direction of the first furnace body and are connected with the first furnace body, and the first porous medium burners are used for burning gas;
the second porous medium burners are arranged in the combustion cavity at intervals along the length direction of the second furnace body and are connected with the second furnace body, and the second porous medium burners are used for burning gas;
the first convection fans are arranged between two adjacent first porous medium burners and can blow gas;
the second convection fans are arranged between two adjacent second porous medium burners, along the height direction of the first furnace body, the projection of the second convection fans is overlapped with the projection of the first convection fans, and the second convection fans can blow gas.
The tempering furnace provided by the embodiment of the invention has at least the following beneficial effects: after the first furnace body and the second furnace body form a combustion cavity, fuel gas can be combusted in the combustion cavity; the first porous medium burners and the second porous medium burners are respectively arranged at intervals, after fuel gas is combusted in the first porous medium burners and the second porous medium burners respectively, the high-efficiency high-temperature solid radiation effect is achieved, the fuel gas can generate vortex, split flow and confluence in the holes of the first porous medium burners and the second porous medium burners respectively, so that the violent disturbance is generated, heat generated by combustion is transmitted in a high-temperature solid radiation mode, the glass is uniformly heated, in addition, when the glass is heated after the first convection fan and the second convection fan are oppositely arranged, the glass is positioned between the first convection fan and the second convection fan, and the first convection fan and the second convection fan can respectively mix the gases at two sides of the glass in a rolling way, so that the temperature fields generated in the combustion cavity are relatively uniform, and the heating of different positions of the glass is uniform. Therefore, the tempering furnace can lead the generated temperature to be uniform, thereby heating the glass and leading the glass to be formed with better quality.
According to some embodiments of the invention, the tempering furnace further comprises a temperature detector for detecting a temperature within the combustion chamber.
According to some embodiments of the invention, the tempering furnace is further provided with a first air inlet pipeline communicated with the first porous medium burner, the tempering furnace is further provided with a second air inlet pipeline communicated with the second porous medium burner, and the initial ends of the first air inlet pipeline and the second air inlet pipeline are respectively provided with a proportional valve.
According to some embodiments of the invention, the tempering furnace is further provided with a first mixing zone and a second mixing zone, the first mixing zone is respectively communicated with the first air inlet pipeline and the first porous medium burner, the first mixing zone is arranged between the first air inlet pipeline and the first porous medium burner, the second mixing zone is respectively communicated with the second air inlet pipeline and the second porous medium burner, and the second mixing zone is arranged between the second air inlet pipeline and the second porous medium burner.
According to some embodiments of the invention, the tempering furnace is further provided with an exhaust pipeline, a feeding port and a discharging port, wherein the exhaust pipeline, the feeding port and the discharging port are communicated with the combustion cavity, the feeding port is used for glass to enter, the discharging port is used for glass to be transported out, and the exhaust pipeline is arranged at one end, close to the feeding port, of the first furnace body.
According to some embodiments of the invention, the tempering furnace further comprises a conveying member disposed in the combustion chamber, the conveying member being configured to transport the glass from the inlet to the outlet.
According to a second aspect of the present invention, a combustion control method for use in the tempering furnace according to any one of the first aspect, includes the steps of:
the temperature in the combustion chamber is sensed and then the ratio of air and gas entering the combustion chamber is adjusted.
The combustion control method provided by the embodiment of the invention has at least the following beneficial effects: through detecting the temperature in the combustion chamber, then adjust the ratio back of getting into the air and the gas in the combustion chamber, can make the temperature in the combustion chamber even, specifically, when the temperature in the combustion chamber is lower, can reduce the ratio of air and gas, make the gas content higher to improve the temperature in the combustion chamber, on the contrary, when the temperature in the combustion chamber is higher, can increase the ratio of air and gas, make the gas content lower, thereby reduce the temperature in the combustion chamber, so, through detecting the temperature in the combustion chamber to and adjust the ratio of air and gas, can make the temperature in the combustion chamber keep stable, thereby heat glass. Specifically, the combustion control method can lead the temperature generated by the tempering furnace to be uniform, thereby leading the glass forming quality to be better.
According to the combustion control method of some embodiments of the present invention, when it is detected that the temperature in the combustion chamber is lower than a set temperature, the ratio of the air and the gas is made to be 1.1 to 1.2.
According to the combustion control method of some embodiments of the present invention, when it is detected that the temperature in the combustion chamber is higher than a set temperature, the ratio of the air and the gas is made to be 1.3 to 1.8.
According to some embodiments of the invention, the ratio of the air to the gas is greater than 1.8 when there is no glass in the combustion chamber.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic view of a tempering furnace according to some embodiments of the present invention.
Reference numerals:
the tempering furnace 10, the first furnace body 100, the second furnace body 200, the combustion chamber 300, the first porous medium burner 400, the second porous medium burner 500, the first convection fan 600, the second convection fan 700, the first air inlet pipeline 800, the second air inlet pipeline 900, the stop valve 1000, the first mixing area 1100, the second mixing area 1200, the exhaust pipeline 1300, the feed inlet 1400, the discharge outlet 1500, the conveying member 1600 and the proportional valve 1700.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the description of the present invention, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1, in some embodiments, a tempering furnace 10 includes: the first furnace body 100, the second furnace body 200, the plurality of first porous medium burners 400, the plurality of second porous medium burners 500, the first convection fan 600, and the second convection fan 700. Wherein, along the vertical direction, the first furnace body 100 is located above the second furnace body 200, and the first furnace body 100 and the second furnace body 200 together form a combustion chamber 300. The glass may be heated in the combustion chamber 300. Insulation layers may be provided in the first and second furnace bodies 100 and 200 to maintain the temperature in the combustion chamber 300 uniform. The heat insulating layer can be made of materials with low heat conductivity coefficients, such as heat insulating bricks, mullite, aluminum silicate, aerogel and the like.
Referring to fig. 1, a plurality of first porous medium burners 400 are disposed in the combustion chamber 300 at intervals along the length direction of the first furnace 100 and connected to the first furnace 100, and the first porous medium burners 400 are used for burning gas. The material of the first porous medium burner 400 includes, but is not limited to, ceramic materials such as silicon carbide, aluminum oxide, zirconium oxide, etc. The manufacturing process can be realized in the modes of sintering, powder metallurgy, 3D printing and the like. The plurality of second porous medium burners 500 are disposed in the combustion chamber 300 at intervals along the length direction of the second furnace body 200 and connected to the second furnace body 200, and the second porous medium burners 500 are used for burning gas. The material of the second porous medium burner 500 includes, but is not limited to, ceramic materials such as silicon carbide, aluminum oxide, zirconium oxide, etc. The manufacturing process can be realized in the modes of sintering, powder metallurgy, 3D printing and the like. Wherein, in the vertical direction, the first porous medium burner 400 and the second porous medium burner 500 are oppositely arranged, and the glass can be positioned between the first porous medium burner 400 and the second porous medium burner 500, so that the first porous medium burner 400 and the second porous medium burner 500 respectively heat at two sides of the glass, and the heating at two sides of the glass is uniform. The pores of the porous medium in the first porous medium burner 400 may be 30um to 100um, and specifically may be 40um, 45um, 60um, 80um and 95um. If the pores of the porous medium are too small, clogging of micropores may be caused with the combustion time, whereas if the pores of the porous medium are too large, the gas passage path may be shortened and heated unevenly. The pores of the porous medium in the second porous medium burner 500 may be 30um to 100um, and in particular, may be 40um, 45um, 60um, 80um and 95um. If the pores of the porous medium are too small, clogging of micropores may be caused with the combustion time, whereas if the pores of the porous medium are too large, the gas passage path may be shortened and heated unevenly.
Referring to fig. 1, a first convection fan 600 is disposed between two adjacent first porous medium burners 400, and the first convection fan 600 can blow gas. The second convection fans 700 are disposed between two adjacent second porous medium burners 500, and the projections of the second convection fans 700 overlap with the projections of the first convection fans 600 in the height direction of the first furnace 100, and the second convection fans 700 can blow gas.
Specifically, after the first furnace body 100 and the second furnace body 200 form the combustion chamber 300, the fuel gas may be burned in the combustion chamber 300; the first porous medium burners 400 and the second porous medium burners 500 are respectively arranged at intervals, after the fuel gas is combusted in the first porous medium burners 400 and the second porous medium burners 500, the fuel gas has high-efficiency high-temperature solid radiation effect, and the fuel gas can respectively generate vortex, split flow and confluence in the pores of the first porous medium burners 400 and the second porous medium burners 500, so that intense disturbance is generated, heat generated by combustion is transmitted in a high-temperature solid radiation mode, and the glass is uniformly heated, in addition, when the glass is heated due to the fact that the first convection fan 600 and the second convection fan 700 are arranged oppositely, the glass is positioned between the first convection fan 600 and the second convection fan 700, and the first convection fan 600 and the second convection fan 700 can respectively mix the gases at two sides of the glass in a rolling way, so that the temperature fields generated in the combustion cavity 300 are relatively uniform, and the heating at different positions of the glass is uniform. In this way, the tempering furnace 10 can make the generated temperature uniform, thereby heating the glass and making the quality of glass molding better.
It should be added that, by comparing the mode of burning fuel gas by the first porous medium burner 400 and the second porous medium burner 500 with the mode of burning fuel gas by the heating wire tempering furnace 10, it can be known that the heating wire tempering furnace 10 adopts electric energy as a heat energy source, and the cost is high, thereby causing resource waste. While the first porous medium burner 400 and the second porous medium burner 500 are low in cost, resources can be saved.
Further, in some embodiments, the tempering furnace 10 further includes a temperature detector for detecting the temperature within the combustion chamber 300. The temperature detector may be a thermocouple, and detects the temperature in the combustion chamber 300 through the temperature detector, so that a worker can conveniently learn the temperature in the combustion chamber 300, and determine whether the temperature in the combustion chamber 300 is stable (when the temperature is unstable, the glass is heated unevenly), for example, whether the temperature is kept at about 600 ℃. If the temperature within the combustion chamber 300 is unstable, a worker may take steps, such as adjusting the ratio of air to gas entering the combustion chamber 300, to stabilize the temperature within the combustion chamber 300.
Further, referring to fig. 1, in some embodiments, the tempering furnace 10 is further provided with a first air intake pipe 800 communicating with the first porous medium burner 400. The gas and air enter the first porous medium burner 400 through the first gas inlet pipe 800, so that the gas burns, providing high temperature heating of the glass in the combustion chamber 300. The tempering furnace 10 is further provided with a second air intake duct 900 communicating with the second porous medium burner 500. The gas and air enter the second porous medium burner 500 through the second inlet duct 900, so that the gas burns, providing high temperature heating of the glass in the combustion chamber 300. The initial ends of the first and second intake pipes 800 and 900 are each provided with a proportional valve 1700. The proportional valve 1700 is a device capable of controlling the flow rate ratio of a liquid or a gas, among others. The flow can be adjusted according to the input signal, and the input voltage or current signal is converted into corresponding flow to be output. The proportional valve 1700 is capable of adjusting the ratio of air and fuel gas entering the first and second intake conduits 800, 900. Specifically, the flow rate of air or the flow rate of gas may be increased by the proportional valve 1700, thereby maintaining the temperature in the combustion chamber 300 uniform. In addition, the proportional valve 1700 may be configured to control the air flow such that the air flow is at least as small as the minimum air amount required for the combustion reaction of the gas.
Further, referring to fig. 1, the tempering furnace 10 further includes a stop valve 1000, where the stop valve 1000 is disposed at the front end of the proportional valve 1700. Air and fuel gas pass through the shut-off valve 1000 and then through the proportional valve 1700. The shut-off valve 1000 can shut off or fill in air and gas.
Further, in order to allow the air and the gas to enter the first porous medium burner 400 and the second porous medium burner 500, the air and the gas can be sufficiently mixed, thereby improving combustion efficiency. Referring to fig. 1, in some embodiments, the tempering furnace 10 is further provided with a first mixing zone 1100 and a second mixing zone 1200. The first mixing region 1100 and the second mixing region 1200 may be a cavity, the first mixing region 1100 is respectively communicated with the first air inlet pipe 800 and the first porous medium burner 400, and the first mixing region 1100 is disposed between the first air inlet pipe 800 and the first porous medium burner 400. As such, after the air and the gas enter from the first air inlet duct 800, the air and the gas are mixed again in the first mixing zone 1100, and thus enter the first porous medium burner 400 to be burned. The second mixing region 1200 is respectively connected to the second air inlet pipe 900 and the second porous medium burner 500, and the second mixing region 1200 is disposed between the second air inlet pipe 900 and the second porous medium burner 500. As such, after the air and the gas enter from the second air inlet pipe 900, the air and the gas are mixed again in the second mixing zone 1200, and thus enter the second porous medium burner 500 to be burned.
Further, referring to fig. 1, in some embodiments, the tempering furnace 10 is further provided with an exhaust pipe 1300, a feeding port 1400 and a discharging port 1500, which are communicated with the combustion chamber 300. The inlet 1400 is used for glass to enter, the outlet 1500 is used for glass to be transported out, and the exhaust pipeline 1300 is arranged at one end of the first furnace body 100 close to the inlet 1400. Specifically, the exhaust pipe 1300 can exhaust the combusted exhaust gas out of the combustion chamber 300, and after the exhaust pipe 1300 is disposed at one end of the first furnace body 100 near the feed port 1400, when the glass enters from the feed port 1400, the exhaust gas at the exhaust pipe 1300 can generate a preheating effect on the low-temperature glass just entering the tempering furnace 10, so that energy is saved.
Further, referring to fig. 1, in some embodiments, the tempering furnace 10 further includes a conveying member 1600, wherein the conveying member 1600 is disposed in the combustion chamber 300, and the conveying member 1600 is used for conveying glass from the inlet 1400 to the outlet 1500. The conveyor 1600 may be a ceramic roller table of materials including, but not limited to, silicon carbide, aluminum oxide, zirconium oxide, etc., materials with a small coefficient of thermal expansion and high temperature stability. The ceramic roller way can be used for conveniently transporting glass.
The following describes a combustion control method, which, in some embodiments, is used in the tempering furnace 10 according to any one of the above embodiments, the combustion control method comprising the steps of:
the temperature within the combustion chamber 300 is sensed and then the ratio of air and gas entering the combustion chamber 300 is adjusted.
By detecting the temperature in the combustion chamber 300 and then adjusting the ratio of air and gas entering the combustion chamber 300, the temperature in the combustion chamber 300 can be uniform, specifically, when the temperature in the combustion chamber 300 is lower, the ratio of air and gas can be reduced, the content of gas is higher, and the temperature in the combustion chamber 300 is improved, whereas when the temperature in the combustion chamber 300 is higher, the ratio of air and gas can be increased, the content of gas is lower, and the temperature in the combustion chamber 300 is reduced, so that the temperature in the combustion chamber 300 can be kept stable by detecting the temperature in the combustion chamber 300 and adjusting the ratio of air and gas, and the glass is heated. Specifically, the combustion control method can make the temperature generated by the tempering furnace 10 uniform, so that the glass forming quality is better.
Further, in some embodiments, when the temperature in the combustion chamber 300 is detected to be lower than the set temperature, the ratio of air and gas is made to be 1.1 to 1.2. Specifically, the set temperature may be 600 degrees celsius, wherein when the temperature in the combustion chamber 300 is detected to be less than 600 degrees celsius by the temperature detector, the ratio of air to gas is between 1.1 and 1.2, which can ensure that more air than gas, so that the gas is fully combusted, rapidly releases heat, and increases the temperature in the combustion chamber 300.
Further, in some embodiments, when the temperature in the combustion chamber 300 is detected to be higher than the set temperature, the ratio of air and gas is made to be 1.3 to 1.8. Specifically, the set temperature may be 600 degrees celsius, wherein when the temperature in the combustion chamber 300 is detected to be greater than 600 degrees celsius by the temperature detector, the ratio of air to gas is between 1.3 and 1.8, which may ensure more air than gas to sufficiently burn the gas, and then the remaining air may cool the combustion chamber 300 to reduce the temperature in the combustion chamber 300. It should be noted that, when the temperature of the combustion chamber 300 is too high, the supply of the flow rate of the fuel gas may be stopped, but such a method may cause a rapid temperature drop, and thus the temperature in the combustion chamber 300 may be unbalanced, and a uniform effect may not be obtained.
Further, in some embodiments, when there is no glass within the combustion chamber 300, the ratio of air to gas is greater than 1.8. Specifically, when there is no thermal load of glass into the tempering furnace 10, the temperature in the tempering furnace 10 is increased due to the inertia of temperature, and at this time, the flow rate of the fuel gas is reduced, the air flow rate is increased, and the ratio of air to fuel gas is above 1.8, it is conceivable that the air content is high, a part of the air is burnt together with the fuel gas, and another part of the air can have a rapid cooling effect, thereby reducing the temperature in the combustion chamber 300.
In some embodiments, the combustion control method can also control the uniformity of the temperature of the combustion chamber 300 in the tempering furnace 10 through the first convection fan 600 and the second convection fan 700 on the one hand, and precisely control the temperature of each region in the combustion chamber 300 through the proportional valve 1700 on the other hand. Specifically, by blowing the gas in the combustion chamber 300 and the ratio of the air and the gas entering the combustion chamber 300, the temperature uniformity in the combustion chamber 300 is achieved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. Tempering furnace, its characterized in that includes:
a first furnace body;
the first furnace body and the second furnace body form a combustion cavity together;
the first porous medium burners are arranged in the combustion cavity at intervals along the length direction of the first furnace body and are connected with the first furnace body, and the first porous medium burners are used for burning gas;
the second porous medium burners are arranged in the combustion cavity at intervals along the length direction of the second furnace body and are connected with the second furnace body, and the second porous medium burners are used for burning gas;
the first convection fans are arranged between two adjacent first porous medium burners and can blow gas;
the second convection fans are arranged between two adjacent second porous medium burners, along the height direction of the first furnace body, the projection of the second convection fans is overlapped with the projection of the first convection fans, and the second convection fans can blow gas.
2. The tempering furnace according to claim 1, further comprising a temperature detector for detecting a temperature in the combustion chamber.
3. The tempering furnace according to claim 2, wherein the tempering furnace is further provided with a first air inlet pipe communicated with the first porous medium burner, the tempering furnace is further provided with a second air inlet pipe communicated with the second porous medium burner, and initial ends of the first air inlet pipe and the second air inlet pipe are respectively provided with a proportional valve.
4. A tempering furnace according to claim 3, further provided with a first mixing zone and a second mixing zone, wherein the first mixing zone is respectively communicated with the first air inlet pipe and the first porous medium burner, the first mixing zone is arranged between the first air inlet pipe and the first porous medium burner, the second mixing zone is respectively communicated with the second air inlet pipe and the second porous medium burner, and the second mixing zone is arranged between the second air inlet pipe and the second porous medium burner.
5. The tempering furnace according to claim 1, further comprising an exhaust pipe, a feed port and a discharge port, wherein the exhaust pipe is communicated with the combustion chamber, the feed port is used for feeding glass, the discharge port is used for feeding the glass, and the exhaust pipe is arranged at one end of the first furnace body close to the feed port.
6. The tempering furnace according to claim 5, further comprising a transfer member disposed in the combustion chamber, the transfer member being configured to transport the glass from the inlet to the outlet.
7. A combustion control method for use in a tempering furnace according to any one of claims 1 to 6, comprising the steps of:
the temperature in the combustion chamber is sensed and then the ratio of air and gas entering the combustion chamber is adjusted.
8. The combustion control method according to claim 7, characterized in that when the temperature in the combustion chamber is detected to be lower than a set temperature, the ratio of the air and the gas is made to be 1.1 to 1.2.
9. The combustion control method according to claim 7, characterized in that when the temperature in the combustion chamber is detected to be higher than a set temperature, the ratio of the air and the gas is made to be 1.3 to 1.8.
10. The combustion control method according to claim 7, wherein when there is no glass in the combustion chamber, a ratio of the air and the gas is made larger than 1.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310938590.1A CN116947306A (en) | 2023-07-27 | 2023-07-27 | Tempering furnace and combustion control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310938590.1A CN116947306A (en) | 2023-07-27 | 2023-07-27 | Tempering furnace and combustion control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116947306A true CN116947306A (en) | 2023-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310938590.1A Pending CN116947306A (en) | 2023-07-27 | 2023-07-27 | Tempering furnace and combustion control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116947306A (en) |
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2023
- 2023-07-27 CN CN202310938590.1A patent/CN116947306A/en active Pending
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